| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cold Spray Additive Manufacturing: Part Quality and Performance
|
| Presentation Title |
Evolution of Residual Stress in Cold Sprayed SS304L Measured via Neutron Diffraction |
| Author(s) |
Christopher M. Roper, Chris M. Fancher, Jeff Bunn, Luke N. Brewer |
| On-Site Speaker (Planned) |
Christopher M. Roper |
| Abstract Scope |
Cold spray is a solid-state additive technique that can result in the formation of significant residual stresses. Neutron diffraction was employed to investigate the relationship between residual stress and coating thickness in cold-sprayed 304L austenitic stainless steel. Results show that shot peening effects predominantly dominate the residual stress profile, leading to substantial in-plane compressive force. The impact of laser heating, a widely used method to alter cold spray's microstructural properties, on the coating's residual stress is also analyzed. The findings indicate that the maximum compressive residual stress in the in-plane component is mainly independent of coating thickness, which suggests that the material properties determine the maximum residual stress. The effectiveness of two analytical models in predicting residual stress is also evaluated. Both models provide reasonable fits to the data, and their limitations and areas for improvement are discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, Characterization |